Association of Uncomplicated Electrocardiographic Conduction Blocks With Subsequent Cardiac Morbidity in a Community-Based Population (Olmsted County, Minnesota)
Abstract
Ventricular conduction blocks (VCBs) identified on a 12-lead electrocardiogram (ECG) are associated with poor outcomes in patients with known cardiac disease. The prognostic implications of uncomplicated VCB (right or left bundle branch block [RBBB or LBBB], left anterior hemiblock) in patients without cardiac diagnoses, however, need to be reevaluated in the current therapeutic era. The purpose of this study was to determine long-term cardiac morbidity and mortality in a community-based population with electrocardiographically-identified VCB, documented normal left ventricular ejection fraction, and no diagnoses of cardiac disease at the time of the index ECG. A retrospective observational cohort study was undertaken of patients in Olmsted County, Minnesota, evaluated from 1975 to 1999. Kaplan-Meier survival analysis post-index electrocardiography was performed with median follow-up of 9.0 years; 706 patients (mean age 64 +/- 16 [SE] years) were identified. Of those, 12% had LBBB with left-axis deviation (LAD); 20% had LBBB without LAD; 26% had left anterior hemiblock; and 42% had RBBB. Kaplan-Meier analysis indicated a significant difference in cardiovascular morbidity risk among the VCB groups (p = 0.017) with left anterior hemiblock and LBBB with LAD, and these were associated with the highest 10-year cardiovascular morbidity risk (58% and 68%, respectively). The incidence of dilated cardiomyopathy was 3% in patients with LBBB with LAD compared with 0.85% in the overall cohort. Significant mortality differences were also demonstrated between LBBB with LAD compared with LBBB without LAD (p = 0.048), left anterior hemiblock compared with LBBB without LAD (p <0.0001), and left anterior hemiblock compared with RBBB (p = 0.0007). In conclusion, the identification of uncomplicated VCB with LAD is associated with increased long-term cardiac morbidity/mortality risk, including the development of dilated and ischemic cardiomyopathy. Isolated VCB is an early marker of cardiac co-morbidities and potentially identifies a high-risk group of patients who warrant preventive intervention.
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The predictive value of various heart rate parameters during exercise tests and of ventricular conduction blocks and left anterior hemiblock were reconfirmed recently.
“The predictive value of various heart rate parameters during exercise tests 44 and of ventricular conduction blocks and left anterior hemiblock 45 were also reconfirmed recently.”
From The Year of 2008 in Electrocardiology (2010) · cites this paper as [45]
Cites
History of the Rochester Epidemiology Project
Melton, L. J. (1996) · Mayo Clinic Proceedings · doi:10.4065/71.3.266 · Cited by 1,443 · see citing works
Baldasseroni, S., Opasich, C., Gorini, M., Lucci, D., Marchionni, N., Marini, M., Campana, C., Perini, G., Deorsola, A., Masotti, G., et al. (2002) · American Heart Journal · doi:10.1067/mhj.2002.121264 · Cited by 797 · see citing works
Grines, C. L., Bashore, T. M., Boudoulas, H. K., Olson, S., Shafer, P., & Wooley, C. F. (1989) · Circulation · doi:10.1161/01.cir.79.4.845 · Cited by 741 · see citing works
Intra-left ventricular electromechanical asynchrony
Bader, H., Garrigue, S., Lafitte, S., Reuter, S., Jaı̈s, P., Haı̈ssaguerre, M., Bonnet, J., Clémenty, J., & Roudaut, R. (2004) · Journal of the American College of Cardiology · doi:10.1016/j.jacc.2003.08.038 · Cited by 473 · see citing works
LGrines, C., MBashore, T., HBoudoulas, SOlson, PShafer, & FWooley, C. (1989) · Circulation · Cited by 457 · see citing works
Etiology and pathology of bilateral bundle branch block in relation to complete heart block
Lenegre, J. (1964) · Progress in Cardiovascular Diseases · doi:10.1016/s0033-0620(64)80001-3 · Cited by 421 · see citing works
Intraventricular conduction delay: a prognostic marker in chronic heart failure
Shamim, W., Francis, D. P., Yousufuddin, M., Varney, S. J., Pieopli, M. F., Anker, S. D., & Coats, A. J. S. (1999) · International Journal of Cardiology · doi:10.1016/s0167-5273(99)00077-7 · Cited by 401 · see citing works
Natural history of isolated bundle branch block
Fahy, G. J., Pinski, S. L., Miller, D. P., McCabe, N., Pye, C., Walsh, M. J., & Robinson, K. (1996) · The American Journal of Cardiology · doi:10.1016/s0002-9149(96)00160-9 · Cited by 316 · see citing works
A clinical and follow-up study of right and left bundle branch block.
Rotman, M., & Triebwasser, J. H. (1975) · Circulation · doi:10.1161/01.cir.51.3.477 · Cited by 278 · see citing works
Bundle-Branch Block in a General Male Population
Eriksson, P., Hansson, P., Eriksson, H., & Dellborg, M. (1998) · Circulation · doi:10.1161/01.cir.98.22.2494 · Cited by 276 · see citing works
Congestive Heart Failure and QRS Duration
Shenkman, H. J., Pampati, V., Khandelwal, A. K., McKinnon, J. E., Nori, D. M., Kaatz, S. S., Sandberg, K. R., & McCullough, P. A. (2002) · CHEST Journal · doi:10.1378/chest.122.2.528 · Cited by 250 · see citing works
Bundle-branch block in middle-aged men: risk of complications and death over 28 years
Eriksson, P., Wilhelmsen, L., & Rosengren, A. (2005) · European Heart Journal · doi:10.1093/eurheartj/ehi580 · Cited by 187 · see citing works
Predictors of heart failure among women with coronary disease
Bibbins-Domingo, K., Lin, F., Vittinghoff, E., Barrett-Connor, E., Hulley, S. B., Grady, D., & Shlipak, M. G. (2004) · Circulation · doi:10.1161/01.cir.0000141726.01302.83 · Cited by 171 · see citing works
Schneider, J. F., Thomas, H. E., Sorlie, P. D., Kreger, B. E., McNamara, P. M., & Kannel, W. B. (1981) · The American Journal of Cardiology · doi:10.1016/0002-9149(81)90196-x · Cited by 170 · see citing works
Turner, M., Bleasdale, R. A., Vinereanu, D., Mumford, C. E., Paul, V., Fraser, A. G., & Frenneaux, M. P. (2004) · Circulation · doi:10.1161/01.cir.0000131184.40893.40 · Cited by 155 · see citing works
Fung, J. W.-H., Yu, C.-M., Yip, G., Zhang, Y., Chan, H., Kum, C.-C., & Sanderson, J. E. (2003) · Heart · doi:10.1136/heart.90.1.17 · Cited by 146 · see citing works
Prognostic Significance of Incident Complete Left Bundle Branch Block Observed Over a 40-Year Period
Imanishi, R., Seto, S., Ichimaru, S., Nakashima, E., Yano, K., & Akahoshi, M. (2006) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2006.03.044 · Cited by 115 · see citing works
Sandhu, R. K., & Bahler, R. C. (2004) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2003.09.053 · Cited by 114 · see citing works
Pathological basis of primary heart block.
Davies, M. J., & Harris, A. (1969) · Heart · doi:10.1136/hrt.31.2.219 · Cited by 113 · see citing works
Left bundle branch block: prevalence, incidence, follow-up and outcome
Hardarson, T., Árnason, Á., Elíasson, G. J., Palsson, K., Eyjólfsson, K., & Sigfússon, N. (1987) · European Heart Journal · doi:10.1093/oxfordjournals.eurheartj.a062172 · Cited by 106 · see citing works
Natural history of left bundle-branch block.
Rabkin, S. W., Mathewson, F. A. L., & TATE, R. B. (1980) · Heart · doi:10.1136/hrt.43.2.164 · Cited by 104 · see citing works
Stenestrand, U., Tabrizi, F., Lindbäck, J., Englund, A., Rosenqvist, M., & Wallentin, L. C. (2004) · Circulation · doi:10.1161/01.cir.0000143136.51424.38 · Cited by 87 · see citing works
Left bundle branch block: A continuously evolving concept
Flowers, N. C. (1987) · Journal of the American College of Cardiology · doi:10.1016/s0735-1097(87)80065-7 · Cited by 72 · see citing works
Isolated bundle branch block and left ventricular dysfunction
Lee, S., McCulloch, C. E., Mangat, I., Foster, E., Marco, T. D., & Saxon, L. A. (2003) · Journal of Cardiac Failure · doi:10.1054/jcaf.2003.19 · Cited by 65 · see citing works
Left axis deviation and left anterior hemiblock among 8,000 Japanese-American men
Yano, K., Peskoe, S. M., Rhoads, G. G., Moore, J. O., & Kagan, A. (1975) · The American Journal of Cardiology · doi:10.1016/0002-9149(75)90116-2 · Cited by 39 · see citing works
Risk Factor Implications of Incidentally Discovered Uncomplicated Bundle Branch Block
Miller, W. L., Ballman, K. V., Hodge, D. O., Rodeheffer, R. J., & Hammill, S. C. (2005) · Mayo Clinic Proceedings · doi:10.4065/80.12.1585 · Cited by 38 · see citing works
Self-citationBiagini, E., Elhendy, A. A., Schinkel, A. F. L., Nelwan, S. P., Rizzello, V., van Domburg, R. T., Rapezzi, C., Rocchi, G., Simoons, M. L., Bax, J. J., et al. (2005) · Journal of the American College of Cardiology · doi:10.1016/j.jacc.2005.05.059 · Cited by 33 · see citing works
Natural history of marked left axis deviation (left anterior hemiblock)
Rabkin, S. W., Mathewson, F. A. L., & TATE, R. B. (1979) · The American Journal of Cardiology · doi:10.1016/0002-9149(79)90020-1 · Cited by 28 · see citing works
Intraventricular conduction disturbances in civilian flying personnel: left anterior hemiblock.
Canaveris, G., Ms, H., & Mv, E. (1992) · PubMed · Cited by 11 · see citing works
Prognosis in Bundle Branch Block
McAnulty, J. H., & Rahimtoola, S. H. (1981) · Annual Review of Medicine · doi:10.1146/annurev.me.32.020181.002435 · Cited by 8 · see citing works
Long-Term Prognosis of the Left Anterior Hemiblock1
Lopes, M. G., Rocha, E., Lopes, V. M., dos Reis, D. D., & de P�dua, F. (2015) · Advances in cardiology · doi:10.1159/000399636 · Cited by 5 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Bussink, B. E., Holst, A. G., Jespersen, L., Deckers, J. W., Jensen, G. B., & Prescott, E. (2012) · European Heart Journal · doi:10.1093/eurheartj/ehs291 · Cited by 266 · see citing works
Gain-of-Function Mutations in TRPM4 Cause Autosomal Dominant Isolated Cardiac Conduction Disease
Liu, H., Zein, L. E., Kruse, M., Guinamard, R., Beckmann, A., Bozio, A., Kurtbay, G., Mégarbané, A., Ohmert, I., Blaysat, G., et al. (2010) · Circulation Cardiovascular Genetics · doi:10.1161/circgenetics.109.930867 · Cited by 223 · see citing works
Aro, A. L., Anttonen, O. M., Tikkanen, J. T., Junttila, J. M., Kerola, T. V., Rissanen, H. A., Reunanen, A., & Huikuri, H. V. (2011) · Circulation Arrhythmia and Electrophysiology · doi:10.1161/circep.111.963561 · Cited by 177 · see citing works
Crisel, R., Farzaneh‐Far, R., Na, B., & Whooley, M. A. (2011) · European Heart Journal · doi:10.1093/eurheartj/ehr139 · Cited by 121 · see citing works
Zhang, Z.-M., Rautaharju, P. M., Soliman, E. Z., Manson, J. E., CAIN, M. E., Martin, L. W., Bavry, A. A., Mehta, L. S., Vitolins, M. Z., & Prineas, R. J. (2012) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2012.06.060 · Cited by 117 · see citing works
Dik, V. K., Peters, M. J. L., Dijkmans, P. A., van der Weijden, M., Vries, M. D., Dijkmans, B. A. C., van der Horst-Bruinsma, I., & Nurmohamed, M. T. (2010) · Scandinavian Journal of Rheumatology · doi:10.3109/03009740903096101 · Cited by 70 · see citing works
García‐Álvarez, A., Sitges, M., Pinazo, M., Regueiro, A., Posada, E., Poyatos, S., Ortiz-Pérez, J. T., Heras, M., Azqueta, M., Gascón, J., et al. (2010) · PLoS neglected tropical diseases · doi:10.1371/journal.pntd.0000826 · Cited by 66 · see citing works
Right Bundle Branch Block: Current Considerations
Ikeda, T. (2020) · Current Cardiology Reviews · doi:10.2174/1573403x16666200708111553 · Cited by 39 · see citing works
Haataja, P., Anttila, I., Nikus, K. C., Eskola, M. J., Huhtala, H., Nieminen, T. V. M., Jula, A., Salomaa, V. V., Reunanen, A., Nieminen, M. S., et al. (2015) · Annals of Medicine · doi:10.3109/07853890.2014.985704 · Cited by 35 · see citing works
Right bundle branch block: are we looking in the right direction?
Lozano, I. F., & Brugada, J. (2012) · European Heart Journal · doi:10.1093/eurheartj/ehs359 · Cited by 18 · see citing works
Mantovani, A., Rigolon, R., Pichiri, I., Morani, G., Bonapace, S., Dugo, C., Zoppini, G., Bonora, E., & Targher, G. (2017) · Journal of Diabetes and its Complications · doi:10.1016/j.jdiacomp.2017.09.011 · Cited by 17 · see citing works
Tiosano, S., Hod, H., Oberman, B., Chetrit, A., & Dankner, R. S. (2016) · The American Journal of Medicine · doi:10.1016/j.amjmed.2016.05.032 · Cited by 16 · see citing works
Park, C. S., Cha, M., Choi, E., & Oh, S. (2016) · Korean Circulation Journal · doi:10.4070/kcj.2016.0359 · Cited by 12 · see citing works
Usefulness of QRS Axis Change to Predict Mortality in Patients With Left Bundle Branch Block
Patel, P. J., & Verdino, R. J. (2013) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2013.03.045 · Cited by 11 · see citing works
Left bundle branch block—Innocent bystander, silent menace, or both
Lau, E. W., Bonnemeier, H., & Baldauf, B. J. (2024) · Heart Rhythm · doi:10.1016/j.hrthm.2024.12.038 · Cited by 11 · see citing works
Clinical and Prognostic Significance of Idiopathic Left Bundle-Branch Block in Young Adults
Delise, P., Rivetti, L., Poletti, G., Centa, M., Allocca, G., Sitta, N., Cati, A., Turiano, G., Lanari, E., Zeppilli, P., et al. (2021) · Cardiology Research and Practice · doi:10.1155/2021/6677806 · Cited by 9 · see citing works
Yano, M., Egami, Y., Ukita, K., Kawamura, A., Nakamura, H., Matsuhiro, Y., Yasumoto, K., Tsuda, M., Okamoto, N., Tanaka, A., et al. (2020) · The American Journal of Cardiology · doi:10.1016/j.amjcard.2020.12.051 · Cited by 8 · see citing works
Tikkanen, J. T. (2013) · Cited by 7 · see citing works
Pantazopoulos, J. S., David, A., Kostis, W. J., Cosgrove, N. M., & Kostis, J. B. (2016) · Hellenic Journal of Cardiology · doi:10.1016/j.hjc.2016.11.034 · Cited by 7 · see citing works
Lepori, A. J., Mishima, R. S., Rodriguez, G., Moreyra, E. A., Serra, J. L. P., Tibaldi, M. Á., Martellotto, A., & Moreyra, E. A. (2015) · Cardiology Journal · doi:10.5603/cj.a2015.0005 · Cited by 7 · see citing works
Association between complete right bundle branch block and atrial fibrillation development
Zhang, F., Liu, X., Zhao, D., Wu, J., Zhang, L., Hu, J., Fan, X., Yang, H., Yan, L., Liu, J., et al. (2022) · Annals of Noninvasive Electrocardiology · doi:10.1111/anec.12966 · Cited by 6 · see citing works
Bundle branch blocks and the risk of mortality in the Atherosclerosis Risk in Communities study
Zhang, Z.-M., Rautaharju, P. M., Prineas, R. J., Loehr, L. R., Rosamond, W. D., & Soliman, E. Z. (2015) · Journal of Cardiovascular Medicine · doi:10.2459/jcm.0000000000000235 · Cited by 6 · see citing works
Zhang, H., Goodman, S. G., Steg, P. G., Budaj, A., Lopez-Sendon, J. L., Dorian, P., Huynh, T. T., Mangat, I., Wong, G. C., Spencer, F. A., et al. (2014) · Heart · doi:10.1136/heartjnl-2014-305708 · Cited by 5 · see citing works
Ding, S., Chai, K., Li, Y., Fang, F., Yang, J., & Wang, H. (2018) · International Journal of Cardiology · doi:10.1016/j.ijcard.2018.06.069 · Cited by 4 · see citing works
Axelsson, J., Wieslander, B., Jablonowski, R., Klem, I., Nijveldt, R., Schelbert, E. B., Sörensson, P., Sigfridsson, A., Chaudhry, U. A., Platonov, P. G., et al. (2018) · Journal of Electrocardiology · doi:10.1016/j.jelectrocard.2018.09.009 · Cited by 4 · see citing works
Winding without twiddling of a pacemaker wire
Lazaros, G. A., Tsioufis, C. P., Milkas, A. N., & Stefanadis, C. (2012) · European Heart Journal · doi:10.1093/eurheartj/ehs192 · Cited by 4 · see citing works
Yang, X., Chen, S., Song, H., Shu, R., Wang, J., Wang, G., Liu, P., Li, M., Wu, L., Li, N., et al. (2023) · International Journal of Cardiology · doi:10.1016/j.ijcard.2023.131666 · Cited by 3 · see citing works
Ion channel TRPM4 activity and cardiac conduction disease
Wu, Y. N. (2012) · Cited by 3 · see citing works
Multiple-Gated Acquisition Scan With Normal Left Ventricular Ejection Fraction and LBBB
Mannelli, L., Caldwell, J. H., Elman, S., Lewis, D. H., BERNARD, W., & Vesselle, H. J. (2013) · Clinical Nuclear Medicine · doi:10.1097/rlu.0000000000000247 · Cited by 2 · see citing works
Bloqueo de rama derecha y morbimortalidad cardiovascular en pacientes sanos
Alventosa-Zaidin, M., Saumell, C. R., & Brugada, J. (2018) · Medicina Clínica · doi:10.1016/j.medcli.2018.04.026 · Cited by 2 · see citing works
Ramallo, P. G., Blasco, P. M., Martínez, M. J. G., Martínez, L. N., Valero, A. R., Castelló, F. P., Santiago, F. M. R., Ibarra, N. V., Quintanilla, M. A., Cabanes, E. C., et al. (2019) · Revista Clínica Española · doi:10.1016/j.rce.2019.05.007 · Cited by 2 · see citing works
Complete Right Bundle Branch Block as a Predictor of Cardiovascular Events in Type 2 Diabetes
Ono, K., Uchimoto, S., Miyazaki, M., Honda, N., Mori, K., Morioka, T., Imai, T., Shoji, T., & Emoto, M. (2022) · Journal of Clinical Medicine · doi:10.3390/jcm11154618 · Cited by 2 · see citing works
Prognosis of elderly patients hospitalized in the cardiac ward
Cichocka‐Radwan, A., Piętka, I., & Lelonek, M. (2012) · Open Medicine · doi:10.2478/s11536-012-0087-8 · Cited by 2 · see citing works
The Year of 2008 in Electrocardiology
Stern, S. (2010) · Annals of Noninvasive Electrocardiology · doi:10.1111/j.1542-474x.2009.00347.x · Cited by 1 · see citing works
Blood Pressure Control and Incident Left-Ventricular Conduction Disease
Frimodt-Møller, K. E., & Marcus, G. M. (2025) · Current Cardiology Reports · doi:10.1007/s11886-025-02196-w · Cited by 1 · see citing works
Çırakoğlu, Ö. F., Şahin, S., & Yılmaz, A. Ş. (2021) · Istanbul Medical Journal · doi:10.4274/imj.galenos.2021.08365 · Cited by 1 · see citing works
Long-term outcome of pre-specified ECG patterns in acute coronary syndrome
Koivula, K., Konttila, K. K., Eskola, M. J., Martiskainen, M., Huhtala, H., Virtanen, V., Mikkelsson, J., Järvelä, K. M., Niemelä, K. O., Karhunen, P. J., et al. (2020) · Journal of Electrocardiology · doi:10.1016/j.jelectrocard.2020.08.001 · Cited by 1 · see citing works
Thomas, H. E., Cunnington, M. S., & McComb, J. M. (2011) · Reviews in Clinical Gerontology · doi:10.1017/s0959259811000086
Right bundle branch block and cardiovascular morbidity and mortality in healthy patients
Alventosa-Zaidin, M., Saumell, C. R., & Brugada, J. (2018) · Medicina Clínica (English Edition) · doi:10.1016/j.medcle.2018.10.002
All-Cause Mortality for Life Insurance Applicants with the Presence of Bundle Branch Block
Freitas, S. A., MacKenzie, R., Wylde, D. N., Bergen, J. V., Holowaty, J. C., Beckman, M., Rigatti, S. J., Zamarripa, D., & Gill, S. (2019) · Journal of Insurance Medicine · doi:10.17849/insm-48-1-1-12.1
Ramallo, P. G., Blasco, P. M., Martínez, M. J. G., Martínez, L. N., Valero, A. R., Castelló, F. P., Santiago, F. M. R., Ibarra, N. V., Quintanilla, M. A., Cabanes, E. C., et al. (2019) · Revista Clínica Española (English Edition) · doi:10.1016/j.rceng.2019.05.015
Darby, A. E. (2020) · doi:10.1002/9781118754511.ch12
From Argentina to Denmark—The wine is still good
Ho, R. T. (2021) · Heart Rhythm · doi:10.1016/j.hrthm.2021.10.016
The cardiovascular evaluation of candidates for living kidney donation
Chauhan, K., Garg, N., Wolff, M. R., Mandelbrot, D. A., & Dhingra, R. (2026) · Transplantation Reviews · doi:10.1016/j.trre.2025.100990
Sasaki, K., Kuwata, S., Izumo, M., Sato, Y., Kai, T., Okuno, T., Tanaka, T., Sekiguchi, M., & Akashi, Y. J. (2026) · Circulation Reports · doi:10.1253/circrep.cr-25-0249
- Authors
- Miller, W. L., Hodge, D. O., & Hammill, S. C.
- Affiliations
- Mayo Clinic (US)
- Corresponding author
- Miller, Wayne L.
- Venue
- The American Journal of Cardiology
- Publisher
- Elsevier BV
- Published
- 2008-01
- Volume
- 101
- Issue
- 1
- Pages
- 102-106
- ISSN
- 0002-9149 (ISSN-L)
- OpenAlex
- W2077848572
- Cited by
- 46
- References
- 31
- Citations by year
- 2026: 2 · 2025: 1 · 2024: 1 · 2023: 1 · 2022: 2 · 2021: 3 · 2020: 4 · 2019: 3 · 2018: 4 · 2017: 1 · 2016: 3 · 2015: 4 · 2014: 1 · 2013: 3 · 2012: 6
- FWCI
- 0.93
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The American Journal of Cardiology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
- Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Acute Myocardial Infarction Research
- Keywords
- ventricular conduction block, left bundle branch block, right bundle branch block, left anterior hemiblock, left axis deviation, cardiac morbidity, cardiovascular mortality, dilated cardiomyopathy, ischemic cardiomyopathy, prognosis, community-based population, Olmsted County, Minnesota, electrocardiography screening, preventive interventions, normal left ventricular ejection fraction
- MeSH terms
- Age Factors, Aged, Bundle-Branch Block, Diabetes Mellitus, Electrocardiography, Female, Follow-Up Studies, Heart Diseases, Humans, Male, Middle Aged, Minnesota, Retrospective Studies, Cohort Studies, Kaplan-Meier Estimate
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